Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, 00014 Helsinki, Finland; email:
Annu Rev Plant Biol. 2018 Apr 29;69:209-236. doi: 10.1146/annurev-arplant-042817-040322. Epub 2018 Feb 28.
As fixed organisms, plants are especially affected by changes in their environment and have consequently evolved extensive mechanisms for acclimation and adaptation. Initially considered by-products from aerobic metabolism, reactive oxygen species (ROS) have emerged as major regulatory molecules in plants and their roles in early signaling events initiated by cellular metabolic perturbation and environmental stimuli are now established. Here, we review recent advances in ROS signaling. Compartment-specific and cross-compartmental signaling pathways initiated by the presence of ROS are discussed. Special attention is dedicated to established and hypothetical ROS-sensing events. The roles of ROS in long-distance signaling, immune responses, and plant development are evaluated. Finally, we outline the most challenging contemporary questions in the field of plant ROS biology and the need to further elucidate mechanisms allowing sensing, signaling specificity, and coordination of multiple signals.
作为固定生物，植物特别容易受到环境变化的影响，因此进化出了广泛的适应机制。最初被认为是有氧代谢的副产物，活性氧（ROS）已成为植物中的主要调节分子，其在细胞代谢紊乱和环境刺激引发的早期信号事件中的作用现已确立。在这里，我们回顾了 ROS 信号转导的最新进展。讨论了由 ROS 存在引发的特定隔室和跨隔室信号通路。特别关注已建立和假设的 ROS 感应事件。评估了 ROS 在长距离信号传递、免疫反应和植物发育中的作用。最后，我们概述了植物 ROS 生物学领域最具挑战性的当代问题，以及需要进一步阐明允许感应、信号特异性和协调多个信号的机制的必要性。
